NTREGOPT
1.1j

4.7 (60 votes)

(October 20, 2005)

Windows 2000/Server 2003/XP /
Freeware /
14,394 downloads

NTREGOPT will minimize the size of the registry files and optimize registry access. The program works by recreating each registry hive "from scratch", thus removing any slack space that may be left from previously modified or deleted keys. The program does not change the contents of the registry in any way, nor does it defrag the registry files "on-disk" (as the PageDefrag program from SysInternals does).

Like ERUNT - which works well - this software can be made to run by right clicking on the shortcut and choosing run as administrator. But when the computer restarts it stalls and it's necessary to go through Startup Repair to get it going again.

NTRegOpt and its little brother, EruNT, are such intelligent programs that they seem disharmonious in company with that Bimbo of ME-2 nostalgia known as Vista. If you do mix these expressions of genuine creative quality with crass muckabout Genuine Greed, you'll want to use TweakUAC.exe (internet freeware, or any other means of disabling User Account Control, so to provide breathing space for NTRegOpt. This is the second best way to let NTRegOpt keep the system sweet; although I would think most people (who were bright enough to be running NTRegOpt in the first place) would be bright enough to have upgraded from Vista back to XP some time ago.

On a WinXP with SP2 (ASUS A7n8X Deluxe motherboard ;) ). I tried to add a new USB device (some mp3 player) and it failed. At that point I started to play with USB host/devices drivers (uninstall/install). I also tried to install some sort of usb sniffer (snoopy pro maybe). After this everything went crazy. I wasn't able to reinstall any usb component, every install attempt returning: "cannot install hardware", "insufficient system resources exist to complete the requested service".
After a while I figured out that there is something bad with registry so I tried several shareware programs like Registry Fix or Registry Mechanic. They didn't solve the problem. After one day of trying everything (including check disk) I found this thread: http://forum.osnn.net/pr...d.php?t=42411&pp=20
and after I found http://www.larshederer.h...line.de/erunt/index.htm
Using NTREGOPT I managed to reduce the hive size from 200Mb to 37Mb. After that I was able to reinstall all USB devices without a problem.
NTREGOPT is a great, free tool and better than payed software.